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Magnesia Chrome Bricks

Low Carbon Brick and Carbon-free Brick

Honsin series of magnesia-chrome bricks are composite basic refractory products, made by magnesite and chromite which are burned at high temperature or ultra-high temperature. The products show the features of excellent resistance against slag, high fired strength, good erosion resistance and thermal shock resistance. They can be applied in AOD/VOD refining furnace, DH/RH degassing device, and lining of nonferrous metal converter.

Typical product characteristics tables :

Direct-Bonded Magnesiate-Chrome Bricks
Brand DB-4 DB-6 DB-8A DB-8B DB-12A DB-12B DB-16A DB-16B DB-18A DB-18B
MgO   %  Min. 80 75 74 74 66 66 60 60 58 58
Cr2O3  %  Min. 4 6 8 8 12 12 16 16 18 18
SiO2% Max. 2.0 2.0 1.5 2.0 1.5 2.0 1.5 2.0 1.5 2.0
Apparent Porosity % Max. 18 18 18 18 18 18 18 18 18 18
Cold Crushing Strength MPa Min. 40 40 40 35 40 35 40 35 40 35
Refractoriness under Load ℃ Min. 1600 1600 1600 1600 1600 1600 1600 1600 1600 1600

Semi-Rebonded MgO-Cr2O3 brick

Rebonded MgO-Cr2O3 brick

Brand SR-16A SR-16B SR-20A SR-20B R-16A R-16B R-20A R-20B R-24 R-26
MgO % Min. 60 60 55 55 65 60 60 60 52 50
Cr2O3% Min. 16 16 20 20 16 16 20 20 22 24
SiO2% Max. 1.5 1.8 1.5 1.8 1.2 1.6 1.2 1.2 1.2 1.2
Apparent Porosity % Max. 17 17 17 17 16 16 16 16 16 16
Cold Crushing Strength MPa Min. 40 35 40 35 45 40 45 40 45 45
Refractoriness under Load ℃ Min. 1750 1700 1750 1700 1750 1700 1750 1700 1750 1750